package socket;

import java.io.*;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;

/*
   聊天客户端
    */
public class Client {
    /*
    Socket封装了TCP协议的通讯细节，使用它可以与远端计算机建立TCP连接，并
    基于两条流（输入流和输出流）与远端计算机交互数据
     */
    private Socket socket;

    public Client() {
       /*
       实例化Socket就是与远端计算机建立连接
       参数1服务端计算机IP地址  通过ip找到服务器计算机
       参数2服务端打开的服务端口 通过端口连接到服务器端的应用程序
        */
        try {
            System.out.println("正在连接服务端----");
            socket = new Socket("localhost", 8088);
            System.out.println("与服务端建立连接！");
        } catch (IOException e) {
            e.printStackTrace();
        }


    }

    public void start() {
        try {
            OutputStream out = socket.getOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(out, StandardCharsets.UTF_8);
            BufferedWriter bw = new BufferedWriter(osw);
            PrintWriter pw = new PrintWriter(bw, true);

            Scanner scanner = new Scanner(System.in);
            while (true) {
                String line = scanner.nextLine();
                if ("exit".equals(line)) {
                    break;
                }
                pw.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Client client = new Client();
        client.start();
    }

    /**
     *
     *
     * (测试代码 测试git)
     *
     *
     *
     *
     *
     * 该线程负责读取服务端发送过来的消息
     */
    private class ServerHandler implements Runnable {
        public void run() {
            try {
                //通过socket获取输入流读取服务端发送过来的消息
                InputStream in = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(in, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);

                String message;
                while ((message = br.readLine()) != null) {
                    System.out.println(message);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}
